Blood Money by Tom Bradby
New York, 1929, a city of speakeasies, swells and hoodlums at the fag end of the roaring twenties. It's a hell of a time and place for a young cop to be trying to make his way in the world.
Joe Quinn's first case is one that could put his name up in lights; a banker takes a dive from a tall building onto Wall Street. All the signs point to murder. Pretty soon, the dead man has company; a group of old buddies is being eliminated, in a particularly gruesome manner.
For the young detective a case that starts as an opportunity swiftly becomes a nightmare from which he cannot escape. Joe Quinn is about to discover just how tough being an honest cop in a dishonest world can be...